Railroad-gate.



No.848,677. v PATBNTED APR. 2, 1907.

' -G. E. MURRAY.

V RAILROAD GATE. APPLIOAIIOH 11.31) JULY 12. 1906.

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GEORGE E. MURRAY,'0F ST. REGIS FALLS, NEW YORK.

RAILROAD-GATE.

Specification of Letters Patent.

Patented April 2, 1907.

Application filed July 12, 1906. Serial lilo. 325,905

T at whom, it may concern:

Be it known that LGEORGE E. MURRAY, a

citizen of the United States, residing at St.

Regis Falls, in the county of Franklin, State of New York, have invented certain new and useful Improvements in Railroad-Gates; and

I do hereby declare the following to be a full, I

, means operable by the train for storing fluid under pressure.

It is to be understood that I do not desire to be limited to the exact details of construction shown and described, for obvious modifi cations will occur to a person skilled in the art.

In the drawings forming a portion of this specification and in which like numerals of reference indicate similar parts in the several views, Figure 1 is an elevational View of the present invention, showing one pair of the fingers in trip position through engagement by an engine and illustrating the pumps. Fig. 2 is a top plan view showing the gate mechanism, the upper portions of the casings being removed. Fig. 3 is a view of the opposite side of the structure fromFig. 1, the gateoperating cylinders and valves being shown in vertical section. Fig. 4 is a view taken transversely of the tracks and showing the several portions of the mechanism.

Referring now to the drawings, there are shown a pair of rails 5, having spaced pairs of depending brackets 6 and 7, in which there are journaled transversely-extending rockshafts 8 and 9., respectively. Rock-shafts 10 and 11 are journaled transversely beneath the rails 5 between the first-named rockshafts and adjacent to the gate-operating mechanism, to be presently described, the shafts 8 and 9 being located at suflicient distances from the crossing to permit operation thereof by a train, as will be later understood, in time to protect the crossing, the shafts 10 and 11 being j ournaled in brackets 12, carried by the rails. Cross-arms 13 are carried by the rock-shafts 8 and 9, and similar crossarms 14 are carried by the shafts 10 and 11.

The arms of the shafts 9 and 11 are connected at their corresponding ends by cables 15, which thus'lie in parallel relation, while similar cables 16 connect the cross-arms of the shafts 8 and 10. A pair of crossed rods 17 connect the opposite ends of the cross-arms 14, and it will thus be seen that the several rock-shafts are connected for simultaneous movement, the shafts 10 and 11 moving in opposite directions and the outer shafts 8 and 9 moving in the direction with their adj acent inner shafts. Springs 18 are inserted in the cables 15 and 16 to permit of slight movement of the rock-shafts 8 and 9 with respect to their cables.

Horizontal cross-arms 19 are carried by the shafts 10 andl 1, and these arms 19 have pivoted to their ends depending piston-rods 20, which are connected with the pistons 21 of pump-cylinders 22 for operation thereof when the shafts are rocked, and these pumps are connected by pipes 23 with a storage-tank 24'. A pair of gates 25, pivoted between their ends for vertical movement, are located at each side of the track formed by the rails 5,

and a cylinder 26 is provided for each gate and has located therein a vertically-movable piston 27 which is connected with the gate by means of a piston-rod 28 rearwardly of the pivot-point of the gate for movement of the gate into closed position when the piston is raised, and the rearward end of each gate is provided with a balance-weight 29.

Each cylinder 27 is provided with a slidevalve 30, and eccentric-disks 31 are carried by the rook-shafts 10 and 11 and are connected with the slide-valve for movement of the latter when the rock-shafts are operated, and the arrangement is such that the valves lie normally in position to close the lower ports 32 of the cylinders 26, these ports being connected, by means of the valve-chests 33, with supply-pipes 34., which are connected with the storage-tank 24, the upper ports 32 being open.

Upwardly-extending fingers 35 are carried by each of the shafts 8 and 9 in position for engagement by trip members 36, carried by an engine, and the arrangement is such that when these fingers are engaged by a train approaching the crossing they are moved into position to shift the rock-shafts l0 and 1 1 for upward movement of the valves 30, which uncovers the ports 32, admitting air to the cylinders 26 and raising the pistons 27, which closes the gates, as will be readily understood. At the same time the pumps are operated to force air into the tank 24. After the engine has passed beyond the crossing it engages the other set of fingers 35 and moves them to bring the valves downwardly into normal position, as will be readily understood, when the communication between the port 22 and the interior of the chest 33 is cut off and communication is established be tween the port and exhaust-passages 37, so that the gates are free to return to open position through admission of air through the ports 32.

that is claimed is 1. The combination with railroad-rails, of

gates therefor movable into and out of opera tive position, rockshafts pivotally connected with the rails, upward]y-extending operating-fingers carried by certain of said shafts, pumps connected with others of said shafts for operation when the shafts are rocked cross-arms carried by the shafts, connections between the cross-arms of the shafts for simultaneous operation of the shafts, fluid-operated mechanism connected with the gates for movement thereof, a fluid-supply tank, fluid-conducting connections between the tank and the mechanism, fluid-conducting connections between the pump and the tank,

valves for the mechanisms, and connections between certain of the rock-shafts and the valves for movement of the latter when the shafts are rocked.

2. The combination with railroad-rails, of rock-shafts pivotally connected therewith in spaced relation, upwardly-extending trainengaging fingers carried by the rock-shafts, other rock-shafts pivotally connected with the rails between the first-named shafts, pumps connected with the second-named rock-shafts for operation thereby when the shafts are rocked, connections between the several rock-shafts for simultaneous movethe first-named shafts are moved in one direction, and into inoperative position when said first-named shafts are moved in the other directon.

In testimony whereof I afIiX my signature in presence of two witnesses.

GEORGE E. MURRAY. l/Vithesses JOHN A. MAY, T. B. REILLY. 

